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Steel Adapter, 3/8-18 Male NPT To 1/2-14 Female NPT, Straight

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Description & Features

This Eaton Aeroquip steel adapter features a 3/8-18 male NPT to 1/2-14 female NPT straight configuration. This steel adapter is suitable for grease, instrumentation, and most hydraulic systems.

The A dimension of this Eaton Aeroquip fitting is 1.68.

SKU: 2040-6-8S

Supplier Part Number (MPN): 2040-6-8S

Alternate Part Numbers: C1AY36, MI-00327460, MINO-00015F68454

Specifications

A
1.68
Alternate Part Numbers
Alternate Part Number C1AY36, Alternate Part Number MI-00327460, Alternate Part Number MINO-00015F68454
Application
Other - Grease, instrumentation, and most hydraulic systems
Brand
Danfoss Power Solutions (II LLC Aeroquip)
Brand
Aeroquip
Pack Size
1.00
UOM
EA
End Gender 1
13554
End Gender 2
13555
End Size 1
0.38
End Size 2
0.50
End Type 1
NPTF
End Type 2
NPTF
Minimum Working Temperature
-40
Supplier Part Number
2040-6-8S
Thread 1
3/8-18
Thread 2
1/2-14
Thread Sealant
No
Product Weight
0.11 lbs

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Product Questions & Answers (1)

Question by: Brenda H on Dec 17, 2025, 12:42 PM
what's the difference in size between the male and female ends on this adapter? trying to step up from a 3/8 line to a 1/2 connection and want to make sure I got the right part
Answer by: Customer Support on Dec 19, 2025, 6:19 AM
The male end threads are 3/8-18 NPT and the female end is 1/2-14 NPT, so yes, this steps up from the smaller male side to the larger female side in a straight configuration. That's exactly the size combination you're describing.